SsangYong Stavic / SsangYong Rodius (2005 year). Service manual - part 91

DI02-39

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

ENGINE HOUSING

DI ENG SM - 2004.9

Notice

The retaining lugs should be positioned in the grooves
(arrow).

Notice

If the maximum permissible length of L= 63.8 mm is
exceeded, the 12-sided stretch bolts should be
replaced.

2. Coat the upper thrust washers with oil and insert into the

crankcase so that the oil grooves are facing the crank
webs (arrow).

3. Coat the lower thrust washers with oil and insert into the

crankcase so that the oil grooves are facing the crank
webs (arrow).

1. Thoroughly clean the oil galleries and check the journal

section and bearings. Replace if necessary.

4. Coat the new crankshaft with engine oil and place it on

the crankcase.

5. Install the crankshaft bearing caps according to the

markings and tighten the bolts.

Installation Notice

Tightening torque

55 ± 5 Nm + 90° + 10°

•

Install from #1 cap.

Crankshaft - Reassembly

DI02-40

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

ENGINE HOUSING

DI ENG SM - 2004.9

6. Position the #1 piston at TDC and install the crankshaft.

7. Install the piston connecting rod journal to the crankshaft

journal and tighten the bolts.

8. Measure the crankshaft bearing axial clearance.

• When new: 0.100 ~ 0.245 mm

• When used: 0.300 mm

9. Rotate the crankshaft by hand and check whether it

rotates smoothly.

DI02-41

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

ENGINE HOUSING

DI ENG SM - 2004.9

FLYWHEEL

System Description

This flywheel is installed to the rear end of crankshaft and transfers the output from the engine to the power train
mechanism. When starting the engine, this drive the crank train mechanism initially by using the power from the start
motor. Also, DMF measure the crankshaft speed, sends the signals to ECU, and controls the ignition timing.

DUAL MASS FLYWHEEL (DMF, MANUAL TRANSMISSION EQUIPPED VEHICLE)

Primary wheel

Primary wheel

Secondary

wheel

Ring gear

Plastic bushing

Conventional flywheel

DMF

DI02-42

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

ENGINE HOUSING

DI ENG SM - 2004.9

<Example of DMF operation>

System Characteristics

Function

• Filters irregularities of engine: The secondary flywheel

operates almost evenly so does not cause gear noises

• The mass of the primary flywheel is less than

conventional flywheel so the engine irregularity
increases more (less pulsation absorbing effect)

• Transmission protection function: Reduces the load to

powertrain (transmission) by blocking the irregularity
of engine

Characteristics of DMF

• Reduced vibration noise from the powertrain by blocking

the torsional vibrations

• Enhanced vehicle silence and riding comforts: reduced

engine torque changes

• Reduced shifting shocks

• Smooth acceleration and deceleration

Structure

Function and characteristics

• When the output changes from the engine is high during

power stroke (

): The damper absorbs the shocks to

reduce the changes to transmission.

• When the output changes from the engine is low during

compression stroke (

): The damper increases the torque

changes to clutch.

Advantages of DMF

• Improved torque response by using 3-stage type spring:

Strengthens the torque response in all ranges (low,
medium, and high speed) by applying respective spring
constant at each range.

• Stable revolution of the primary and secondary wheel

by using planetary gear: Works as auxiliary damper
against spring changes

• Less heat generation due to no direct friction against

spring surface: Plastic material is covered on the spring
outer surface

• Increased durability by using plastic bushing (extends

the lifetime of grease)

<Torque change curve of engine and drive shaft>

Angular acceleration amplitude [1/s

2

]

Speed [rpm]

Conventional system

Speed [rpm]

DMFW

Transmission

Engine

Transmission

Engine